Contributors: 17
Author Tokens Token Proportion Commits Commit Proportion
Eric W. Biedermann 142 34.13% 11 22.00%
Al Viro 89 21.39% 6 12.00%
David Howells 49 11.78% 3 6.00%
Christian Brauner 22 5.29% 5 10.00%
Andrey Vagin 20 4.81% 3 6.00%
Jakub Kiciński 20 4.81% 1 2.00%
Linus Torvalds (pre-git) 19 4.57% 10 20.00%
Carlos Neira 17 4.09% 1 2.00%
Andrew Morton 11 2.64% 1 2.00%
Aditya Kali 9 2.16% 1 2.00%
Kirill V Tkhai 7 1.68% 2 4.00%
Olaf Dietsche 4 0.96% 1 2.00%
Aleksa Sarai 2 0.48% 1 2.00%
Denis V. Lunev 2 0.48% 1 2.00%
Kees Cook 1 0.24% 1 2.00%
Christoph Hellwig 1 0.24% 1 2.00%
Greg Kroah-Hartman 1 0.24% 1 2.00%
Total 416 50


/* SPDX-License-Identifier: GPL-2.0 */
/*
 * procfs namespace bits
 */
#ifndef _LINUX_PROC_NS_H
#define _LINUX_PROC_NS_H

#include <linux/ns_common.h>
#include <uapi/linux/nsfs.h>

struct pid_namespace;
struct nsset;
struct path;
struct task_struct;
struct inode;

struct proc_ns_operations {
	const char *name;
	const char *real_ns_name;
	int type;
	struct ns_common *(*get)(struct task_struct *task);
	void (*put)(struct ns_common *ns);
	int (*install)(struct nsset *nsset, struct ns_common *ns);
	struct user_namespace *(*owner)(struct ns_common *ns);
	struct ns_common *(*get_parent)(struct ns_common *ns);
} __randomize_layout;

extern const struct proc_ns_operations netns_operations;
extern const struct proc_ns_operations utsns_operations;
extern const struct proc_ns_operations ipcns_operations;
extern const struct proc_ns_operations pidns_operations;
extern const struct proc_ns_operations pidns_for_children_operations;
extern const struct proc_ns_operations userns_operations;
extern const struct proc_ns_operations mntns_operations;
extern const struct proc_ns_operations cgroupns_operations;
extern const struct proc_ns_operations timens_operations;
extern const struct proc_ns_operations timens_for_children_operations;

/*
 * We always define these enumerators
 */
enum {
	PROC_IPC_INIT_INO	= IPC_NS_INIT_INO,
	PROC_UTS_INIT_INO	= UTS_NS_INIT_INO,
	PROC_USER_INIT_INO	= USER_NS_INIT_INO,
	PROC_PID_INIT_INO	= PID_NS_INIT_INO,
	PROC_CGROUP_INIT_INO	= CGROUP_NS_INIT_INO,
	PROC_TIME_INIT_INO	= TIME_NS_INIT_INO,
	PROC_NET_INIT_INO	= NET_NS_INIT_INO,
	PROC_MNT_INIT_INO	= MNT_NS_INIT_INO,
};

#ifdef CONFIG_PROC_FS

extern int proc_alloc_inum(unsigned int *pino);
extern void proc_free_inum(unsigned int inum);

#else /* CONFIG_PROC_FS */

static inline int proc_alloc_inum(unsigned int *inum)
{
	*inum = 1;
	return 0;
}
static inline void proc_free_inum(unsigned int inum) {}

#endif /* CONFIG_PROC_FS */

static inline int ns_alloc_inum(struct ns_common *ns)
{
	WRITE_ONCE(ns->stashed, NULL);
	return proc_alloc_inum(&ns->inum);
}

#define ns_free_inum(ns) proc_free_inum((ns)->inum)

#define get_proc_ns(inode) ((struct ns_common *)(inode)->i_private)
extern int ns_get_path(struct path *path, struct task_struct *task,
			const struct proc_ns_operations *ns_ops);
typedef struct ns_common *ns_get_path_helper_t(void *);
extern int ns_get_path_cb(struct path *path, ns_get_path_helper_t ns_get_cb,
			    void *private_data);

extern bool ns_match(const struct ns_common *ns, dev_t dev, ino_t ino);

extern int ns_get_name(char *buf, size_t size, struct task_struct *task,
			const struct proc_ns_operations *ns_ops);
extern void nsfs_init(void);

#endif /* _LINUX_PROC_NS_H */